Rescue workers looked for survivors after a four-story building under demolition collapsed into a neighboring thrift store, killing six people.
1In this photo provided by Jordan McLaughlin, a dust cloud rises as people run from the scene of a building collapse on the edge of downtown Philadelphia, Pennsylvania, June 5, 2013.
2Rescue personnel search the scene of a building collapse in Philadelphia, Pennsylvania, June 5, 2013.
3Rescue personnel evacuate an injured person from the scene of a building collapse in Philadelphia, Pennsylvania, June 5, 2013.
4Rescue personnel search the scene of a building collapse in Philadelphia, Pennsylvania, June 5, 2013.